Correct Answer: B

Rationale: When a nurse witnesses a healthcare provider administering an incorrect medication dose, the first step should be to report the error to the nurse manager immediately. Reporting medication errors is crucial for patient safety as it allows prompt intervention to prevent harm. Choice A is incorrect as ignoring the situation can jeopardize patient safety. Choice C, while addressing the error directly, may not ensure proper documentation and follow-up. Choice D, filing an anonymous report, is not as effective as directly informing the nurse manager who can take appropriate action and follow-up on the incident.

Correct Answer: D

Rationale: The best response when a client undergoing chemotherapy expresses concern about hair loss is to advise them that chemotherapy causes temporary hair loss. This response provides accurate information to the client about the side effect they are experiencing. Choice A is incorrect because it may provide false reassurance as for some individuals, hair loss can be a challenging experience. Choice B is not the best initial response as addressing the client's concerns and providing information should come first. Choice C is not the most appropriate response as cutting hair short may not necessarily prevent hair loss and does not address the client's concerns about the temporary nature of chemotherapy-induced hair loss.

Correct Answer: B

Rationale: The correct answer is to recheck the blood pressure before calling for help. When caring for a client with unstable blood pressure, the nurse's priority is to ensure an accurate assessment. Rechecking the blood pressure will confirm the instability and guide further actions. Asking the charge nurse for assistance (Choice A) is important but should come after assessing the situation. Monitoring the client's blood pressure closely (Choice C) is essential, but the immediate action should be to recheck and confirm the current status. Administering antihypertensive medication immediately (Choice D) without a confirmed assessment can be dangerous and is not the initial priority.

Correct Answer: B

Rationale: The correct answer is to assess the patient's pain using a pain scale. This is the priority action because it allows the nurse to obtain an objective measure of the patient's pain intensity. By accurately assessing the pain level, the nurse can determine the appropriate intervention, which may include administering pain medication as prescribed (choice A) or offering non-pharmacological pain relief methods (choice C). Reassessing the patient's pain level after 30 minutes (choice D) is important but comes after the initial assessment to evaluate the effectiveness of the interventions implemented.

Correct Answer: C

Rationale: The correct answer is C. According to the gate control theory, meditation helps relieve pain by blocking pain impulses from coming through the gate in the central nervous system. Choice A is incorrect as meditation does not directly alter the chemical composition of pain neuroregulators. Choice B is incorrect because meditation does not stop the occurrence of pain stimuli. Choice D is incorrect as meditation does not open the gate but rather closes it to block pain impulses.